nit in scan.bro

[Vern Paxson]

>   also, vern, do you want documentation submissions?

Yes, that would be terrific!  Additions, corrections, annotations,
questions, all very welcome.

>   i was going to fill in
>   the sections about Building and Installing Bro (2.1.1) and Running Bro on
>   network traffic (2.1.3).

I've actually already written these, but didn't manage to get them out
into the current on-line version of the docs.  I'll do so shortly.

>   i noticed the source for the docs isn't included,
>   so i can't make patches.

And I'll fix this in the next snapshot, too.

		Vern